Welcome to the AC Tropical Fish aquarium forum. Our aquarium forum is the place to discuss any aquarium related issue in a friendly environment. Our aquarium forum welcomes aquarists of all levels from beginners to experts. Please ask a question in the how to section of our forum or read the FAQ section if you have any questions. register to and become a part of our friendly aquarium forum community today.

Clean water is one first priority.
Enough food for the plecos to eat - at night - is the most important issue usually. It's my contention that more plecos starve to death, than any other reason.

If you feed zucchini it will be almost impossible to underfeed. You can look at it to see the amount eaten. I peel mine, and stick a fork in it to keep it on the bottom. There are lots of other veggies plecos will eat, but none will turn down zucchini.

I got asked why I peel zucchini.
I peel it because I can't grow it myself for three seasons. It's easier to peel it than deal with surface contaminants. Also, my plecos have never eaten the peel. Others have differing experiences.
An acquaintance feeds his plecos previously frozen sweet potato. (yams) Mine won't touch it.

Your experience and mileage may vary. That's one of the joys of fish keeping. Or pain if you're trying to replicate someones success.

Liters to Gallons conversion calculator
"Keeping fish for any period of time doesn't make you experienced if you're doing it wrong. What does, is acknowledging those mistakes and learning from them." ~Aeonflame
"your argument is invalid." ~Mommy1